The original building, built in 1953 using military surplus paint, has been added onto throughout the years.

A corridor connecting the cafeteria and the "B Building" was then added (this glass hallway is referred to as "the Breezeway").

A major addition, including a lecture hall was completed during the 2000-01 school year.

[citation needed] Lee's Summit High School has an Air Force Junior ROTC program, which has been awarded AFJROTC Distinguished Unit many times, most recent being the 2017-2018 school year.

The Honor Guard team has presented the colors in many NCAA Sport Tournaments, the 2016 Ringside World Boxing Championship, and recent NASCAR races.